Method and system for sealing around door

ABSTRACT

Certain example embodiments relate to a sealing system for sealing the periphery of a door relative to a frame. The sealing system includes a multi point finger seal having at least three fingers of differing height and spacing so that a first finger may contact the door and contact of the first finger and second finger is precluded. A second finger is sized and spaced from a third finger so that a free edge of the second finger abuts the base of the third finger. A security seal is located at the bottom of the door and includes a security flap biased into the door, wherein a cam on the frame engages the flap upon closure of the door to urge the security flap toward the floor. The seal includes one or more perforations therein, causing the seal to breakaway and into pieces if removal is attempted.

CROSS REFERENCE TO APPLICATIONS

This application hereby incorporates by reference each of U.S. Pat. Nos.6,381,905; 6,266,924; 6,058,654; and 5,577,349.

FIELD OF THE INVENTION

Certain example embodiments of this invention relate to sealing systemsand, more particularly, to a method and apparatus for sealing a doorrelative to an adjacent frame with a multi-finger seal and a rigidmechanical security seal. The security seal includes one or moreperforations therein that cause the seal to breakaway and into pieces ifremoval is attempted.

BACKGROUND AND SUMMARY OF EXAMPLE EMBODIMENTS OF THE INVENTION

The sealing of doors to separate the inside from the outside, or asecure area from a public area is an interface which must accommodate awide variety of demands. That is, the interface must provide sufficientsecurity as well as permit access to individuals including handicapped.For example, as door levers are being mandated by current buildingcodes, the use of door knobs has significantly decreased. The doorhandle includes a lever on both sides of the door. The latch mechanismis released by turning the handle with a force which is not to exceed apredetermined limit. Many building codes also require deadbolts forsecuring the door. However, the codes usually require the latch anddeadbolts to be retracted simultaneously upon the single actuation ofthe inside handle for emergency egress. Therefore, unintended entry maybe gained by bending a stiff wire, sliding it under the door and anglingit back to the face of the door to loop on the lever and pulling thelever down. As the deadbolt is automatically released when the insidelever is actuated, this actuation of the inside lever substantiallyreduces the security provided by the deadbolt. Door guards and doorchains do not add security when a person leaves a room, as these devicesmay be only actuated by someone inside the room. Further, once theinside handle and deadbolt are released, the remaining security devicesmay not provide the most sufficient security.

Further, the National Life Safety Code, State Codes, Model BuildingCodes, require that openings such as room entries in dormitories, hoteland motel rooms and offices from corridors must be sealed to prevent thepassage of toxic gas and/or smoke and may also include a fire resistiverating. Codes also reference “Listed Authorities” for clarification ofNationally Recognized Standards such as NFPA (National Fire ProtectionAssociation) NFPA 105 for setting limits of smoke infiltration. Even ifthe door frame is sufficiently sealed, a sufficiently large gap at thebottom of the door may substantially defeat a frame seal. Further, manyof these doors must be self closing and self latching. However, anythingwhich rides on or rubs against a rug or floor may interfere with theself closing and latching, thereby violating the codes. While thresholdsare used to seal the gap with the bottom of the door, the thresholdsoften present a trip hazard and may be so high as to violate handicapcodes. Further, the presence of gaps between door and floor or evenframe, allow penetration of noise, smoke, odor, light, and contribute tonoise penetration.

A current problem in the marketplace exists with respect to the abilityto use existing seals to harm persons. For example, people have pulledgasketing material off of door frames in prisons, psychiatricfacilities, halfway houses, and other locations, and have used the sameto strangle or hang themselves and/or others. This very real threat hasled at least the State of New York to pass regulations relating to thelength of strips of gasketing material that may be used to do harm.

In view of the above, it is apparent that there exists a need in the artfor both an improved security seal for affixation at or below a door andan improved multi-finger door frame seal for affixation in a door framesurrounding the door, the overall door sealing system for improvingperformance with respect to fire codes, heating/ventilating codes; andindustry self-policing codes (e.g., ASTM, NFPA, and/or ANSI codes).Also, such smoke seals should function to prevent fire-fueling oxygenfrom entering such rooms, while also reducing the ability to useexisting seals to harm persons, e.g., by strangulation, hanging, etc.

In certain example embodiments of this invention, a multi-finger sealsystem sealing between a door and surrounding frame is provided. Theframe includes a stop and a rabbet surrounding strike and hinge sides ofthe door. A first multi-finger seal portion is provided, at least aportion of which is disposed on a lock jamb adjacent the strike side ofthe door, with the first seal portion including a base affixed upon therabbet on the lock jamb and a plurality of flexible fingers extendingtherefrom. The fingers include first, second, and third fingersextending from the base. The first finger has a length less than thesecond and third fingers, and the third finger has a length greater thanthe first and second fingers. The third finger is located closest to thestop on the lock jamb and the first finger is disposed farthest from thestop so that the first finger is first contacted and bent by the doortoward the second finger when the door is being closed. A secondmulti-finger seal portion is disposed on a hinge jamb adjacent the hingeside of the door. The second seal portion includes a base attached uponthe stop of the hinge jamb so that the base of the second seal portionis arranged substantially perpendicular to the base of the first sealportion. The second seal portion further includes first, second, andthird flexible fingers extending from the second seal portion base withthe first finger of the second seal portion being the shortest of thethree and located farthest from the rabbet of the hinge jamb and thethird finger of the second seal portion being the longest of the threeand located on the stop closest to the rabbet of the hinge jamb so thatthe hinge side of the door first contacts and bends the first finger ofthe second seal portion toward the second finger of the second sealportion when the door is being closed. A plurality of perforations arelocated at predetermined intervals along the first and secondmulti-finger seal portions. The perforations are formed such that themulti-finger seal system breaks away and into pieces proximate to wherethe perforations are located should removal of the multi-finger sealsystem from the frame of the door be attempted.

In certain example embodiments, a multi-finger seal for sealing betweena door and surrounding frame is provided. A base is provided formounting on one of a stop and rabbet of the surrounding frame. First,second, and third flexible sealing fingers protrude outwardly from thebase. The second finger is located immediately between the first andthird fingers with the first finger having the smallest length and thethird finger having the greatest length. The first finger is locatedrelative to the door so that it is first contacted and bent by the doortoward the second finger when the door is closing. The first finger hasa length sufficiently small so that when contacted and bent by theclosing door the bent first finger does not overlap the second finger. Aplurality of perforations are located at predetermined intervals alongthe base and the first, second, and third flexible sealing fingers. Theperforations are formed such that the multi-finger seal system breaksaway and into pieces proximate to where the perforations are locatedshould removal of the multi-finger seal system be attempted.

In certain example embodiments, a method of making a multi-finger sealfor sealing between a door and surrounding frame is provided. A base isprovided for mounting on one of a stop and rabbet of the surroundingframe. First, second, and third flexible sealing fingers are provided,which each protrude outwardly from the base. The second finger islocated immediately between the first and third fingers with the firstfinger having the smallest length and the third finger having thegreatest length. The first finger is located relative to the door sothat it is first contacted and bent by the door toward the second fingerwhen the door is closing. The first finger has a length sufficientlysmall so that when contacted and bent by the closing door the bent firstfinger does not overlap the second finger. A plurality of perforationsare formed at predetermined intervals along the base and the first,second, and third flexible sealing fingers. The perforations are formedsuch that the multi-finger seal system breaks away and into piecesproximate to where the perforations are located should removal of themulti-finger seal system be attempted.

The features, aspects, advantages, and example embodiments describedherein may be combined to realize yet further embodiments.

BRIEF DESCRIPTION OF THE DRAWINGS

These and other features and advantages may be better and morecompletely understood by reference to the following detailed descriptionof exemplary illustrative embodiments in conjunction with the drawings,of which:

FIG. 1 is a perspective view of a multi-finger frame seal for affixationto a door frame surrounding a door.

FIG. 2 is a side elevational cross-sectional view of the multi-fingerframe seal of FIG. 1, this figure illustrating four separate flexiblefingers attached to the base portion.

FIG. 2(a) is a side elevational cross-sectional view of the multi-fingerframe seal of FIGS. 1-2, except that a kerf engaging tab for affixingthe seal on the hinge jamb is provided.

FIG. 2(b) is a side elevational cross-sectional view of the multi-fingerframe seal of FIGS. 1-2, except that a kerf engaging tab for mounting onthe lock jamb is also provided.

FIG. 3 is a side elevational cross-sectional view of a multi-fingerframe seal similar to that shown in FIG. 1 except that it only includesthree flexible fingers.

FIG. 3(a) is a side elevational cross-sectional view of the multi-fingerframe seal of FIG. 3 except that a kerf engaging tab for mounting on thehinge jamb is also provided.

FIG. 3(b) is a side elevational cross-sectional view of the three fingerseal of FIG. 3 except that a kerf engaging tab for affixing the seal onthe lock jamb is also provided.

FIG. 4 is a top plan view illustrating the multi-finger frame seal ofFIG. 1, 2, or 3 affixed to the lock jamb of the door frame.

FIG. 5 is a top plan view illustrating the operable orientation of themulti-finger seal of either FIG. 1, 2, or 3 on both the lock and hingejambs of the frame surrounding the door, the door being shown closing byway of an arrow.

FIG. 6 is an elevational view of a spring-biased security seal foraffixation to the bottom of a door.

FIG. 7 is a side elevational cross-sectional view illustrating thesecurity seal of FIG. 6 affixed adjacent the bottom of a door.

FIG. 8 is a side elevational cross-sectional view illustrating thesecurity seal of FIG. 6 attached to the bottom of a door so that itsdoor engaging portion is attached to the underneath or bottom side asopposed to the embodiment shown in FIG. 7 where the door engagingportion is affixed to the interior face of the door.

FIG. 9 is a side elevational cross-sectional view illustrating thesecurity seal of FIG. 6 affixed adjacent the bottom of a door in arecess defined therein, FIGS. 8 and 9 illustrating the seal when thedoor is in the closed position.

FIG. 10 is a side elevational cross-sectional view of the security sealof FIG. 6 including an angled distal end so as to achieve easy slidingof the security flap across rugs and the like.

FIG. 11 is a side elevational cross-sectional view of the security sealof FIGS. 6-7 contacting the floor when the door is in the closedposition.

FIG. 12 is a perspective view illustrating an actuating cam andcorresponding bracket affixed to the door frame for use in conjunctionwith a spring-biased security seal (e.g., FIG. 6).

FIG. 13 is a perspective view illustrating another type of security sealactuating cam affixed to the door frame.

FIG. 14 is a side elevational cross-sectional view of the security sealof FIG. 6 in the door closed position when the actuating cam is incontact with the security flap maintaining it in the secured position.

FIG. 15 is a side elevational cross-sectional view illustrating thesecurity seal of FIG. 6 in the door closed position with the cam in analternative position.

FIG. 16 is an elevational view of an alternative cam configuration.

FIG. 17 is an elevational view of yet another alternative camconfiguration, both the FIG. 16 and FIG. 17 cams being usable inconjunction with the FIG. 6 spring-biased security seal.

FIGS. 18-19 illustrate still another embodiment of a security sealactuating cam and corresponding bracket to be affixed to the door framefor the purpose of actuating a spring loaded security seal to thesecured position.

FIGS. 20-21 illustrate a security seal actuating cam and correspondingbracket to be affixed to a door frame similar to that shown in FIGS.18-19, except that a cam is mounted on a screw thereby enabling lateraladjustment of the cam so that the time at which the flap is actuatedduring door closing and/or opening may be adjusted.

FIG. 22 is a perspective view illustrating the actuating cam andcorresponding bracket of FIGS. 18-19 affixed to a door frame.

FIG. 23 illustrates yet another embodiment of a security seal actuatingcam affixed to a door frame.

FIG. 24 is a perspective view illustrating a further embodiment of asecurity seal actuating cam and corresponding bracket, this embodimentdiffering from the FIGS. 18-19 embodiment in that it includes threesurface bracket members angled relative to one another to be mounted indifferent areas.

FIG. 25(a) is a perspective view illustrating the actuating cam of FIGS.18-19 mounted to a door frame, with the cam contacting the security flapin the door closed position.

FIGS. 25(b)-25(c) are perspective views of a door closing with asecurity flap distal end according to another embodiment of thisinvention.

FIG. 26 is a perspective view illustrating a gravity-actuated doorsecurity seal attached to a door in the door closed position.

FIGS. 27-28 illustrate the actuating cam to be used in conjunction withthe gravity-actuated security seal of FIG. 26.

FIG. 29 is a perspective view illustrating another embodiment of agravity-actuated door security seal, this embodiment differing from theFIG. 26 embodiment in that a flap locking device is integrally formedwith the actuator in order to maintain the flap in the down positionwhen the door is closed.

FIG. 30 is a perspective view of yet another gravity-actuated securityseal according to an embodiment of this invention.

FIG. 31 is a perspective view of another actuator which may be used inconjunction with the gravity-actuated security seal of FIG. 30.

FIG. 32 is a perspective view illustrating a flap locking member mountedon the door frame which may be used in conjunction with any of thesecurity seals discussed above.

FIG. 33 is a top elevational view illustrating the door, frame, and flaplocking member of FIG. 32.

FIG. 34 is a perspective view illustrating the flap locking member ofFIG. 32 mounted on door frame for use in conjunction with a differenttype of security flap design.

FIG. 35 is a perspective view illustrating how the flap core or rod maybe held in position in the housing by threading a hex head screw intoopposing ends.

FIG. 36 is a side elevational cross-sectional view of a security sealaccording to any of the above embodiments wherein an insert element maybe inserted into the distal end of the security flap via a keywaydefined therein for the purpose of additional sealing.

FIG. 37 is a side elevational cross-sectional view of a security sealhaving a hinge according to another embodiment of this invention.

FIG. 38 is a perspective view illustrating a spring loaded security sealaccording to still another embodiment of this invention wherein a recessor cavity is provided in the stop with a projection from the flapextending therein for the purpose of maintaining the flap in thedownward position when the door is closed.

FIG. 39 is a top elevational view of the flap and its projection elementof FIG. 38.

FIG. 40 is a perspective view of an embodiment similar to that of FIGS.38-39 except that the recess is designed differently so that it isformed in both the soffit and the stop surfaces.

FIG. 41 is a top elevational view of the system of FIG. 40 illustratingthe security flap with its distal end tucked into the recess in thestop/soffit as shown in FIG. 40.

FIG. 42 is a perspective view illustrating a spring-actuated securityflap according to another embodiment of this invention wherein theactuating cam is mounted on the soffit of the door frame.

FIG. 43 is a perspective view illustrating a spring-actuated securityseal system according to still another embodiment of this invention,wherein the actuating cam is mounted on the stop of the door frame.

FIG. 44 is a perspective view illustrating a security seal according toanother embodiment of this invention.

FIG. 45 is a schematic diagram illustrating rotation of the projectionextending from the end of the flap in FIG. 44 during opening/closing ofthe door.

FIGS. 46-47 are perspective views illustrating security flaps forimproved make-up air circulation according to different embodiments ofthis invention.

FIG. 48 is a perspective view illustrating a multi-finger frame sealaccording to a different embodiment of this invention.

FIG. 49 is a side elevational cross-sectional view of the FIG. 48 frameseal.

FIGS. 50-51 are perspective views illustrating a spring system for usein any of the spring-actuated security seals discussed above accordingto different embodiments of this invention.

FIG. 52 is a perspective view illustrating the edge of the security flapangled downward adjacent the cam.

FIG. 53 is a side view illustrating the FIG. 52 security flap as viewedfrom inside of the dwelling, this Figure illustrating the edge of theflap closest the cam being angled downward.

FIG. 54 is a perspective view of a multi-finger frame seal foraffixation to a door frame surrounding a door that includesperforations, according to an example embodiment of this invention.

FIG. 55 is a view of the multi-finger frame seal of FIG. 54 having beenbroken apart at a perforation thereof, according to an exampleembodiment of this invention.

FIGS. 56(a) to 56(d) show various example perforation configurationsaccording to different embodiments of this invention.

DETAILED DESCRIPTION OF EXAMPLE EMBODIMENTS OF THE INVENTION

Referring now more particularly to the following drawings in which likereference numerals indicate like parts throughout the several views.

FIG. 1 is a perspective view of multi-finger frame seal 20 whichincludes substantially planar elongated base 22, as well as a pluralityof flexible, fingers 31, 32, 33, and 34 mounted on and extendingtherefrom. As shown, first finger 31 is shorter than second finger 32which is shorter than third finger 33, which in turn has a shorterlength from base 22 than fourth finger 34. Pressure sensitive tape oradhesive 24 may be applied to the under or rear side of base 22 for thepurpose of affixing multi-finger seal 20 to a door frame. When frameseal 20 is affixed to a door frame adjacent a door, it is oriented sothat when the door is closed, the door first comes into contact withfirst finger 31 and thereafter contacts fingers 32, 33, and 34,respectively.

FIG. 2 is a side elevational cross-sectional view of multi-finger frameseal 20. As illustrated, the distance between first finger 31 and secondfinger 32 is such that upon bending of finger 31 as caused by closure ofa door, first finger 31 does not contact any portion of second finger32. Second, third, and fourth fingers 32-34, respectively, are spacedfrom one another along base 22 such that when the door closes, they willcontact one another. Base 22, as well as the fingers of frame seal 20,may be formed of a material such as Santoprene™. Further description offrame seal 20 may be found in commonly owned U.S. Pat. No. 5,577,349,the disclosure of which is incorporated herein by reference.

FIG. 2(a) is a side cross-sectional view of frame 20 which differs fromFIGS. 1-2 in that kerf 10 is attached or affixed to an edge of base 22so that seal 20 may be attached to the door frame hinge jamb. Kerf 10 isdesigned so as to fit into an aperture defined in the jamb so as to moresecurely affix seal 20 to the door frame along the hinge jamb.

FIG. 2(b) is a side cross-sectional view of multi-finger frame seal 20which differs from the FIGS. 1-2 embodiment in that kerf engaging tab 12is affixed to base 22 at an edge thereof for the purpose of securingseal 20 to the door frame lock jamb. In FIG. 2(b), kerf 12 issubstantially coplanar with base 22 because base 22 on the lock jamb isto be secured to the rabbett. This configuration differs from FIG. 2(a)where kerf 10 is substantially perpendicular to base 22 because on thehinge jamb, base 22 is to be affixed to the stop.

FIG. 3 is a side cross-sectional view of another multi-finger frame seal20 which differs from the FIGS. 1-2 embodiment in that only threeflexible fingers 31-33 are provided on base 22. FIGS. 3(a) and 3(b) areside cross-sectional views of a three finger seal 20 having kerfs 10 and12, respectively, in a manner similar to that discussed above withrespect to FIGS. 2(a) and 2(b). The three fingers 31-33 of the frameseals shown in FIGS. 3-3(b) are provided on base 22 so that when thedoor closes, first finger 31 will not contact finger 32, but finger 32will contact finger 33.

FIG. 5 is a top view illustrating any of the above frame seals 20attached to the door frame surrounding door 6. The door framesurrounding door 6 includes vertically extending lock jamb 14 and hingejamb 16 which are attached at their respective tops by a header. On lockjamb 14, multi-finger seal 20 is affixed on rabbett 12 so that thefingers of seal 20 extend toward hinge jamb 16 when door 6 is in an openposition. When door 6 closes as illustrated in FIG. 5, the door firstcomes into contact with first finger 31, and thereafter fingers 32, 33,and 34, respectively. FIG. 4 is a top view illustrating seal 20 affixedto lock jamb 14 in an enlarged manner.

Meanwhile, on the hinge jamb 16 side, multi-finger frame seal 20 has itsbase 22 attached to stop 10 so that as door 8 closes, it first contactsfirst finger 31 and thereafter the remaining fingers in the same orderas occurs on the lock jamb side. Thus, frame seal 20 is orienteddifferently on the lock and hinge jambs. Seal 20 is affixed to therabbet on the lock jamb side and to the stop surface 10 closest the dooron the hinge jamb 16 side. This provides for substantially no hinge bindduring closing of the door. Additionally, the multi-finger seals 20 onthe hinge and lock sides of the door frame may be part of a singleintegrally formed seal 20 which is U-shaped, the vertically extendinghinge and lock jamb portions shown in FIG. 5 being interconnect acrossthe top of the door frame by another multi-finger seal portion.

FIGS. 48-49 illustrate perspective and side cross-sectional viewsrespectively of a two finger frame seal 100 according to an embodimentof this invention. Frame seal 100 is to be affixed to the door frame asshown in FIG. 5 (e.g., similar to frame seal 20). Frame seal 100 differsfrom seal 20 in that i) seal 100 has only two fingers; and ii) seal 100includes bridge 101 disposed between and connecting flexible fingers 96and 97 for the purpose of creating an air cushion seal. Bridge 101 isspaced from base 22 thereby defining elongated air gap or opening 102therebetween. Gap 102 extends along the entire length of base 22 inbetween fingers 96 and 97 as defined by flexible bridge 101. Theprovision of bridge 101 with its air relief apertures 98 defined thereinallows seal 100 to function as an air cushion when door 6 is closed.Apertures 98 in bridge and aperture(s) 99 in the flexible fingersextending from base 22 allow seal 100 to function as an air cushionagainst shutting door 6 whereby the fluid (e.g., air or gas) withinspace 102 is forced out of the space 102 at a predetermined rate. Therate at which the fluid (e.g., air) is forced from space 102 is dictatedby the number and size of apertures (98, 99). Accordingly, when door 6closes, it first contacts finger 96 and forces it toward finger 97thereby compressing space 102. The air within space 102 cushions thedoor while the air is expounded from the space through the apertures 98,99, thereby resulting in a smoother closing of door 6. According tocertain other embodiments of this invention, apertures 98, 99 need notbe provided as the fluid such as air within space 102 may be forced fromthe space at an end or ends of the seal. It is noted that bridge 101could also be implemented into three or four finger frame seal 20, withthe bridge being disposed between either all fingers or only a selectpair of flexible fingers.

The FIGS. 48-49 embodiment also shows that frame seals according toexamples of this invention may include just two fingers, instead ofthree or four. The two finger seal of this embodiment does not create apredetermined sound upon opening of door 6. The sound created uponopening of door 6 depends upon the height and spacing of the fingers.For example, the sound would be enabled if a small third fin or fingerwere to be added to the FIGS. 48-49 frame seal.

FIG. 54 is a perspective view of a multi-finger frame seal foraffixation to a door frame surrounding a door that includes,perforations, according to an example embodiment of this invention. FIG.54 is similar to FIG. 1, except that the multi-finger seal 20′ includesone or more perforations 54 that facilitate the breaking of the seal 20′in the event that it is moved. Thus, the multi-finger frame seal 20′ ofFIG. 54 includes substantially planar elongated base 22′, as well as aplurality of flexible fingers 31′, 32′, 33′, and 34′ mounted on andextending therefrom, as well as perforations 54 provided to each of theflexible fingers 31′, 32′, 33′ and 34′. As shown, first finger 31′ isshorter than second finger 32′ which is shorter than third finger 33′,which in turn has a shorter length from base 22′ than fourth finger 34′.Pressure sensitive tape dr adhesive 24 may be applied to the under orrear side of base 22′ for the purpose of affixing multi-finger seal 20′to a door frame. When frame seal 20′ is affixed to a door frame adjacenta door, it is oriented so that when the door is closed, the door firstcomes into contact with first finger 31′ and thereafter contacts fingers32′, 33′, and 34′, respectively.

The perforations 54 may be a series of holes, slits, thinned-outportions, and/or the like. Such perforations may be through-hole's thatextend through the material and/or recessions in the materials. The seal20′ will break at the perforated areas upon the application of lessforce than that required to break the non-perforated areas of the seal20′. For example, the seal 20′ will break at the perforated areas uponthe application of about 20% less force, more preferably about 33% lessforce, and more preferably about 50% less force, than that required tobreak the non-perforated areas of the seal 20′. Of course, otherpercentages higher, lower, or in between such ranges also may be used inconnection with certain example embodiments.

The perforations may be formed in the base material 22′ and/or the finsor fingers 31′, 32′, 33′ and 34′. Furthermore, the perforations may beformed in all such areas at one time in a single pass, or in multiplepasses. In the latter case, for example, perforations could be formed inbase material first and then in fins together or separately, or in someother order.

If someone should try to remove the frame seal 20′ once it has beeninstalled on a door frame, the seal 20′ is designed to breakaway atleast at the perforations 54. Thus, for example, FIG. 55 is a view ofthe multi-finger frame seal of FIG. 54 having been broken apart at aperforation thereof, according to an example embodiment of thisinvention. Because the frame seal 20′ is broken into at least first andsecond frame seal pieces 20′(a) and 20′(b) that are small in length, thelikelihood that the smaller pieces could be used for strangulationand/or hanging is thereby reduced. Indeed, the frame seal 20′ thusincludes anti-ligature gasketing. Even in the event that the seal 20′does not completely separate as it is being removed from the door frame,the perforations 54 formed therein may sufficiently weaken the seal 20′such that it ultimately breaks when the weight of a person trying tohang him- or herself is applied to it, and/or when it is being used toattempt to strangle another.

The perforations 54 in the seal 20′ may be evenly or unevenly spacedapart. For example, perforations may be evenly spaced at about 2″ to 8″intervals, or larger or smaller intervals. It is noted that longerintervals may be disadvantageous in some cases, as such longer piecescould be taken and mounted back-to-back (e.g., at every two inches) tore-create a device suitable for hanging and/or strangulation.

The perforations 54 described above and shown in FIGS. 54-55 are“straight line” perforations. That is, they extend substantiallyacross/through the base 22′ and/or the fingers 31′, 32′, 33′ and 34′substantially parallel to the end portions of the seal. However, thepresent invention is not limited to this configuration of perforation.In other words, they need not extend substantially across/through thebase 22′ and/or the fingers 31′, 32′, 33′ and 34′ substantially parallelto the end portions of the seal. In this vein, FIGS. 56(a) to 56(d) showvarious example perforation configurations according to differentembodiments of this invention. First, FIG. 56(a) shows perforations 54 athat slant and/or are angled relative to the end portions of the seal.FIG. 56(b) shows substantially triangular (which also may be flipped to“V” shaped) perforations 54 b. FIG. 56(c) shows “X” shaped perforations.The increased number of perforations in close relative proximity to oneanother further increase the likelihood of a breakaway occurring whenone tries to remove the sea) 20′. FIG. 56(d) shows multi-curved or“squiggle” type perforations 54 d. Other shapes and/or arrangements suchas simple or complex lines, curves, and/or other shapes may be used inconnection with embodiments of this invention, and the invention is notlimited to any particular configuration. Accordingly, the perforationsmay be formed according to any predetermined pattern in certain exampleembodiments. Similarly, and as alluded to above, the perforations may beformed at predetermined spacings relative to one another (e.g., 2-8″apart).

Although the description of the inclusion of perforations is given inconnection with a modification to the FIG. 1 example embodiment, it willbe appreciated that the perforations may be used in connection with anyof the example embodiments described herein.

FIGS. 6-25(a) disclose different embodiments of a spring loaded securityseal for positioning at the bottom side or underneath of door 6. Thepurpose of such a security seal underneath the door is to preventburglars and the like from breaking into a room or dwelling by accessingthe door locking mechanisms and the like from underneath the door.

The FIG. 6 security seal 60 may be attached to door 6 at a variety oflocations, as dictated by the specific door design. Door engagingportion 62 of security seal 60 may be disposed along and affixed to theinterior or inside surface of door 6 as shown in FIG. 7, along thebottom of the door as shown in FIG. 8, or alternatively within a recessin the bottom of a door as shown in FIG. 9.

Door engaging portion 62 of security seal 60 is preferably attached tothe inside or Eecurity side of door 6 as shown in FIGS. 7 and 10. Doorengaging portion 62 is attached at a location which is inaccessible fromthe outside. Door engaging portion 62 is attached to door 6 so thatsecurity flap 64 is movable from an open door (non-secured) positionsubstantially parallel to and adjacent the bottom of door 6 (see FIG. 7)to a secured or door closed position (e.g., see FIG. 11) whereinsecurity flap 64 is pivoted downward about hinge 70 so as to be close toor actually in contact with the floor or ground thereby securing thedwelling against unwanted entry. In the door closed position (e.g., FIG.8 and FIG. 11), the distal end or free edge 65 of flap 64 may contactthe floor.

Hinge 70, of course, may be any type of known hinge (e.g., living hinge)and optionally may be located in a recess defined by the door so as tonot extend or project outwardly from door 6.

As shown in FIG. 8, when door engaging portion 62 is affixed to thebottom side of door 6, flap 64 is substantially parallel thereto whenthe door 6 is opened, with flap 64 pivoting downward about hinge 70 whenthe door is closed. In FIG. 9 when door engaging portion 62 is affixedto the upper side of the recess defined in the underneath side of thedoor, security flap 64 is, again, substantially parallel to portion 62when door 6 is in an open position. When door 6 is closed, flap 64 isforced to or permitted to pivot downward about hinge 70 to the doorclosed position as shown in FIG. 9.

As shown in FIG. 10, the distal end of flap 64 is angled upward at 65 soas to permit the security flap to slide more easily along rugs, hardwoodfloors, and the like.

Because the security seal of FIGS. 6-11 is spring-biased into its dooropen position (see FIG. 7), the flap actuating cams shown in FIGS.12-25(a) are required for forcing flap 64 downward into the securedposition when door 6 is closed. FIG. 12 illustrates flap actuating cam90 attached to and protruding from rabbett 12 of the door frame on theinterior or secured side of stop 10. FIG. 13 illustrates an alternativeembodiment of flap actuating cam 90 non-adjustably affixed to rabbett12. The positioning of cam 90 in both FIGS. 12 and 13 is such that whendoor 6 is swung closed, cam engaging surface 68 of flap 64 comes intocontact with cam 90 thereby forcing flap 64 downward into contact withthe floor placing the security seal in the secured position. When door 6is opened, flap 64 is biased upward into the FIG. 7 position (door openposition) as there is no longer contact with cam 90.

FIG. 14 is a side view of door 6 having security seal 60 attachedthereto in the closed position so that flap 64 is contacting or close tocontacting the floor or ground. As shown, cam 90 is in contact with flap64 thereby forcing it against the spring bias force downward into thesecured position. FIG. 15 illustrates that both the location of cam 90on the rabbett and the size of cam 90 are adjustable for the purpose ofchanging the timing of cam engagement with flap 64 and the distance thatflap 64 is forced downward when the door is closed. FIGS. 16-17illustrates alternative designs for cam 90.

Cam 90 is affixed to door frame 8 and preferably to rabbett 12 on hingejamb 16, and is aligned to engage cam following surface 68 of securityflap 64 such that upon closing the door, the cam following surfacecontacts the cam and the security flap is forced downward away from thedoor to contact the floor. Cam 90 functions as a security wedge todispose and maintain the security seal in the door closed position. Asshown in FIGS. 16-17, cam 90 may be formed as an arc of a sphere orcircle, a spiral, french curve, etc. While earn 90 is preferably mountedon the hinge jamb, it may alternatively or additionally be mounted onthe lock jamb. The specific curve or shape of the contacting surface ofcam 90 and the shape of earn following surface 68 on the flap arerelated and, at least partially, dictate the desired position of cam 90on the door frame.

FIGS. 18-24 illustrate different embodiments of flap engaging cam 90(for use with the spring-biased security seals of this exampleembodiment) which are preferably affixed to the hinge jamb, but mayinstead or additionally be affixed to the lock jamb. As shown in FIGS.18-19, cam 90 is affixed on mounting bracket 104, Pin or projection 105is formed integrally with or on bracket 104 so that cam 90 may beadjustably positioned along the length of pin 105. Accordingly, in orderto move cam 90 from one position to another along pin 105, the userloosens screw 106, slides cam 90 along pin 105 to the new position, andthereafter tightens screw 106 which locks cam 90 to a particularposition on bracket 104. Bracket 104 is affixed to the door frame asshown, for example, in FIG. 12. Elongated apertures or holes 108 areprovided in bracket 104 so that its vertical position on the door framemay be adjusted. Cam 90 and bracket 104 are preferably affixed to thedoor frame by way of screws inserted through apertures 108 (e.g., seeFIG. 22). Apertures 108 may also be used for allowing an installer ofthe system to view alignment marks mades on the door frame therebyenabling easier installation.

FIGS. 20 and 21 illustrate another embodiment of the can for actuatingflap 64 of the security seal. As shown, cam 90 is attached to screw 109so that mere turning of the screw by a user at screwhead 110 causes cam90 to move horizontally along the screw. Screw 109 is affixed to bracket104 by way of screw mounting members 111, with bracket 104 and the cambeing affixed to the door frame as discussed above.

FIG. 22 is a perspective view illustrating the security seal cam systemof FIGS. 18-19 affixed to the door frame. As shown, the main portion ofbracket 104 is attached to the front face of rabbett 12 on the interiorside of the stop by way of screw 112, Meanwhile, the other portion ofbracket 104 which is angled 90 degree backward from the main portion isaffixed to inside frame face 113 by way of tamper-proof screw 114.Accordingly, as door 6 with security seal 60 affixed thereto is closed,surface 68 of flap 64 comes into contact with angled surface 115 of cam90 so that flap 64 is forced downward against the spring bias into thesecured position as the door closes.

It is to be pointed out that according to alternative embodiments, cam90 may be affixed to the security flap so as to contact the door framewhen the door closes and causes the flap to pivot downward.

FIG. 23 illustrates another embodiment of a security flap actuating camaffixed to rabbett 12 (lock or hinge jamb). As shown in FIG. 23, cam 90is affixed to the rabbett so that portion 68 of flap 64 comes intocontact with surface 116 of the cam as the door is closing therebyforcing flap 64 downward into the secured position. Screw 117 or anyother conventional fastener functions to hold cam 90 to rabbett 12 in asecured position.

FIG. 24 is a perspective view illustrating another embodiment of asecurity seal cam actuating system in which bracket 118 is provided withthree sections angled relative to one another. Section 119 of bracket118 is affixed directly to rabbett 12, with section 120 being affixed tostop 10 and section 121 being attached to and flush with soffit 122.Again, apertures 108 are provided in bracket 118 so that the system maybe affixed to the door frame. The position of cam 90 may be adjusted onportion 119 by way of moving the cam laterally along pin 105 asdiscussed above with respect to FIGS. 18-19.

FIG. 25(a) is a perspective view illustrating the FIGS. 18-19 cam systemaffixed to the door frame when door 6 is in the closed position. Asshown, security flap 64 is in contact with cam 90 and is thereforeforced downward into the secured position against the bias of thespring. Distal end 65 of flap 64 is angled upward with respect to themain portion thereof so as to enable the flap to slide more easily alongcarpets and the like. As door 6 is opened, cam engaging edge 68 of flap64 will slide along cam 90 until the portion adjacent distal end 65 isno longer in contact with the cam. Thereafter, flap 64 is spring-biasedupward so that it is substantially parallel to the bottom of door 6.

FIGS. 25(b)-25(c) illustrate another embodiment of this invention wherethe distal end of security flap 64 includes portion 300 angled downwardtoward the floor and portion 301 angled upward. Portion 300 contacts cam200 during door 6 opening and closing, while portion 301 is angledupward to enable easy sliding of the flap over rugs and the like. Flapdistal end portions 300 and 301 are angled in opposite directionsrelative to the main body of the flap 64.

FIGS. 26-31 illustrates a security seal system to be positioned adjacentthe bottom of door 6, this system differing from the security sealdiscussed above in that the system of FIGS. 26-31 is gravity-actuated.

FIG. 26 is a perspective view illustrating a gravity-actuated securityseal system for attachment adjacent the bottom of door 6. Asillustrated, door engaging portion 130 is affixed to the interior sideof door 6 by way of screws 131 or any other type of conventionalfastener. Integrally formed with door engaging portion 130, according tothis embodiment, is elongated quasi-circular housing 132 which extendsacross the interior surface of door 6 between the hinge and lock jambs.Security flap 134, shown in FIG. 26 in the secured door closed position,is pivotally attached within housing 132 (e.g., hinge arrangement).Connected to security flap 134 is elongated core member 135 which ismaintained within housing 132 by way of hex fasteners 136 on either endof the housing. Also utilized in this embodiment is flap actuator or cam137 which functions to raise flap 134 upward from the ground as door 6is opened. Actuator or cam 137 is affixed to inside frame face 113and/or the floor by way of fasteners extending through apertures 138and/or 139, respectively.

A typical operation of the gravity-actuated security seal of FIG. 26will now be described. As illustrated in FIG. 2.6, security flap 134 isin the secured or down position so that the distal end of flap 134 iseither in contact with the floor or substantially close thereto. For thepurpose of this description, it is assumed that actuator 137 is affixedto the inside frame face on the hinge jamb side of the door frame,although it is possible to be affixed to the other side. As door 6 isopened, the lower surface of security flap 134 slides along actuator orcam 137 thereby forcing security flap 134 to pivot upward out of contactof the floor until flap 134 is substantially parallel to the ground.This pivoting of flap 134 is permitted by way of core 135 pivotingwithin housing 132. Flap 134 is permitted to pivot upward until the flapcomes into contact with area 140 of housing 132. The flap is maintainedin this non-secure or upward pivoted position while door 6 remains open.When door 6 is closed, the bottom of flap 134 slides along the top ofactuator 137 from its distal end toward the end closest core 135 whichcauses flap 134 to pivot downward away from the door bottom and into thesecured position as the door is closed.

FIGS. 27-28 illustrate a different embodiment of an actuator which maybe used in conjunction with the FIG. 26 system, FIG. 28 illustrates theactuator 137 shown in FIG. 26, which is affixed to either the floor orthe inside frame face 113. Rounded projection portion 142 is the primarycam surface of the actuator which is contacted by flap 134 during theopening and closing of door 6. FIG. 27 is a top view of the FIG. 26 andFIG. 28 actuator.

FIG. 29 is a perspective view of the gravity-actuated security sealsystem of FIG. 26 except that flap 134 locking member 145 is alsoprovided. According to the FIG. 29 embodiment, locking member 145includes a projection which extends into the doorway from the portion ofactuator 137 affixed directly to inside frame face 113. This projection145 functions to maintain or lock security flap 134 in the securedposition when door 6 is closed. The size and positioning of member 145are such that flap 134 is still permitted to pivot upward out of thesecured position when door 6 is opened (but not when the door is closed)as flap 134 slides along portion 142 of actuator 137.

FIG. 30 is a perspective view illustrating the gravity-actuated securityseal of FIG. 26 except that actuator 137 is replaced with adjustableactuator 147 which is affixed to the floor by way of fastener 148. Inthe FIG. 30 embodiment, flap 134 remains pivoted downward so as to be incontact with the floor or close thereto, when door 6 is in the closedposition. However, when the door is opened, the underneath side of flap134 slides along the top surface of actuator 147 resulting in flap 134being pivoted upward about the core 135 axis into a non-secure positionsubstantially parallel to the bottom of the door. The bottom side offlap 134 remains in contact with the top of actuator 147 while door 6 isopen, thereby maintaining flap 134 in a non-secured position out ofcontact with the ground or floor. As door 6 is closed, gravity causesflap 134 to pivot downward toward the floor as the flap slides along thetop of actuator 147 from the flap's distal end toward the end closest tocore 135.

FIG. 31 is a perspective view of another adjustable actuator 149 whichmay be used in place of actuator 147. Actuator 149 is square in shapeand includes bottom section 150 and top section 151. Bottom section 150is affixed to the floor, while the vertical position of portion 151 maybe adjusted relative to that of section 150 by way of screws 152. Byturning screws 152, a user may cause section 151 to move down or updepending on the screw turn direction so that the extent to whichsecurity flap 134 pivots in both directions is adjustable. In a mannersimilar to actuator 149, top portion 153 of actuator 147 is verticallyadjustable with respect to bottom portion 154 through turning of screw148 or alternatively by rotating member 153 about a fixed screw 148.Optionally, element 151 may be adjustably attached to actuator 137 (seeFIG. 28) so that screws 152 fit in apertures 139.

FIGS. 32-33 illustrate an embodiment of this invention includingsecurity flap locking member 160 which may be used with any of theabove-discussed security seal embodiments of this invention. Flaplocking member 160 is affixed to interior frame face 113 by way ofscrews or fasteners 161. Locking member 160 extends beyond face 113 sothat it is located directly above flap 134 when the flap is in thesecured or closed door position as shown in FIG. 32. In such a manner,member 160 prevents intruders from unlawfully entering the securedlocation by keeping flap 134 maintained in its down or door-closedposition when door 6 is closed and preventing it from being pivotedupward.

FIG. 33 is a top view of the FIG. 32 embodiment; illustrating flaplocking member 160 affixed to interior face 113 adjacent housing 132 andflap 134, when door 6 is in the closed position. FIG. 34 is an enlargedperspective view illustrating the FIGS. 32-34 embodiment with lockingmember 160 keeping flap 134 from being raised when door 6 is in theclosed position.

Optionally, the bottom surface of 160 may be angled instead of parallelto the floor to enable vertical and horizontal pinning point adjustment.

FIG. 35 is a perspective view illustrating that core 135 of thegravity-actuated security seal may be pivotally attached withinelongated housing 132 to make up the hinge by way of hex screw fasteners136 on either end of the core.

FIG. 36 is a side cross-sectional view of either a gravity-actuated orspring bias security seal system affixed adjacent the bottom of door 6.As shown in this embodiment, security flap 64, 134 includes distal endportion 163 having an insert 164 located therein for the purpose ofcreating an improved seal beneath the outside 165 of door 6. A pluralityof different inserts 166-169 are illustrated, each of which may be slidinto elongated keyway 170 formed in the distal end of the security flap.Both keyway 170 and insert 164 are elongated so that they extend alongthe entire length of flap 64, 134 between the door frame along thebottom of the door. Turning to the possible inserts, 164, insert 166includes base member 171 on which a plurality of flexible bristles 172are mounted. Bristles 172 extend directly upward from base 171 so thatthey are substantially perpendicular with respect thereto. Insert 167 isan insert which includes a plurality of bristles 173 which are angledwith respect to base 171, the angle being between 0 and 90 degrees.Insert 168 includes base 171 on which are mounted a plurality ofbristles 174 which extend in different directions relative to the base.Some bristles 174 extend perpendicular from base 171, while others ofinsert 168 are angled relative to the perpendicular direction. Finally,insert 169 includes elongated oval projection 175 extending from base171 for the purpose of enhancing the seal between the floor and thebottom of door 6 on its exterior 165 side.

Optionally, any of the FIG. 36 inserts may instead be attached to theside edge 305 of the flap 64, 134 so as to further seal between the flapand door frame. In such embodiments, the bristles would extend towardand contact the door frame. Also, the attachments or inserts could bepivotally attached to the flap by way of a male or female groove definedin the flap edge or end.

FIG. 37 is a side cross-sectional view of either a gravity-actuated orspring-biased security seal system, with the hinge or pivot system 70,180 being different than in the previously illustrated embodiments. Inthe previous embodiments, housing 132, which was integrally formed withportion 130, surrounded core 135 which was integrally formed with thesecurity flap, with the core being pivotally mounted within the housingto form the hinge. For example, as shown in FIG. 36, housing 132 hasopening 181 defined therein so that the housing is not a completecircle. Opening 181 allows the security flap to extend from the coremounted within the housing.

In contrast, FIG. 37 illustrates an embodiment wherein core 184 isintegrally formed with door engaging portion 130, while the exteriorhousing 185 encompassing the core is integrally formed with securityflap 64, 134. As housing 185 is rotatably or pivotally attached aroundcore 184, this permits the security flap 64, 134 to pivot or hingedownward to the secured position when door 6 is closed.

Optionally, biased finger 315 may be affixed to the distal end of theflap so as to seal between the flap and the door bottom finger 315 isbiased upward toward the bottom of door 6.

FIGS. 38-41 illustrate alternative embodiments for locking the securityflap in the down or secured position when the door is closed. As shownin FIG. 38, recess or cavity 186 is formed in stop 10 on the interiorside closest actuator 90. The purpose of cavity or recess 186 is toreceive elongated projection 187 which extends outwardly from the end ofsecurity flap 64. Projection 187 extends into cavity or recess 186 onlywhen door 6 is in the closed position thereby enabling the recess 186 toprevent flap 64 from being raised when the door is closed. FIG. 39 is atop view of the FIG. 38 security flap 64 illustrating projection 187extending from an end thereof to be placed adjacent the door frame.

FIGS. 40-41 illustrate an embodiment similar to that of FIGS. 38-39except that the recess 190 in FIGS. 40-41 is not completely enclosed asin FIGS. 38-39. Instead, recess 190 of FIGS. 40-41 is defined under stop10 and is open at both the interior side of stop 10 and the soffit side191 of the stop. Recess 190 functions to receive security flap 64 whendoor 6 is in the closed position. Unlike the FIGS. 38-39 embodiment,security flap 64 of the FIGS. 40-41 embodiment extends far enough sothat its distal end 193 extends into recess 190 when door 6 is closed(e.g., no projection is needed). The FIGS. 40-41 embodiment may be usedin conjunction with the spring-loaded security flap as shown oralternatively in conjunction with a gravity-actuated security sealsystem.

An alternative to the FIGS. 40-41 embodiment would be to affix anelongated member having a lip to the floor across the entire doorway inorder to accept end 193 of the flap therein so as to retain the flap inthe secure position while the door is closed.

FIGS. 42-43 illustrate additional embodiments of this invention whereinfor a spring-biased security seal system, the actuating cam extends frominterior stop 10 so that it projects itself substantially parallel tothe surface of rabbets 12. As shown in FIG. 42, cam 200 is made up of arigid plate member affixed to soffit 122 with angled cam portion 201extending beyond the soffit so as to engage the distal end of securityflap 64 when door 6 is being closed. When the distal end of flap 64meets the upper portion 202 of cam projection 201, the distal end of theflap begins sliding down toward bottom portion 203 of the cam projectionthereby causing the security flap to pivot downward into the secured ordoor closed position. Cam projection 201 also functions to maintain flap64 in the downward pivoted direction while door 6 is closed.

In the FIG. 43 embodiment, cam 90 is affixed to and protrudes from stop10 on the interior side of the doorway. Cam 90 is affixed to stop 10 andsoffit 122 by way of plate or bracket 205 which includes two angledportions at right angles to one another. Portion 206 of bracket 205include a pin or the like disposed thereon so that the vertical positionof cam 90 is adjustable up and down pin 207.

FIG. 44 is a perspective view of another embodiment of this inventionincluding a security flap locking member affixed to the door frame forthe purpose of maintaining the security flap in the secured or downwardpivoted position when door 6 is closed. As illustrated, planarprojection member 210 is affixed to and extends axially outward fromcore 135 and hex screw 136. When door 6 is in the closed position asshown in FIG. 44, locking member 212 affixed to the door frame by way ofscrews 213 maintains projection 210 in a particular orientation therebypreventing security flap 134 from being pivoted upward while the door isclosed. For this purpose, blocking member 212 includes a pair of spacedplanar members 214 between which projection 210 is maintained when thedoor is closed. Locking member 212 is preferably affixed to the hingejamb of the door frame.

When door 6 in the FIG. 44 embodiment is opened, projection or wedge 210pivots about the core 135 axis in direction 215 as illustrated in FIG.45 so that the projection slides out of locking member 212 as the dooropens. When door 6 is closed, projection 210 pivots in direction 216 andslides downward into the space defined between members 214. Accordingly,projection 210 is cause to pivot about the core axis thereby slippingout of locking member 212 when 1) door 6 is opened and 2) security flap134 pivots upward. Projection 210 cannot be caused to pivot in direction215 and slip out of the locking member when the door is closed.

FIGS. 46-47 illustrate alternative embodiments for security flaps 64,134 to be used in either the spring-biased or gravity-actuated securityseal systems discussed above. As illustrated, each security flap inFIGS. 46-47 includes an angled distal end 65 as well as at least oneaperture defined in the main elongated body of the security flap. In theFIG. 46 embodiment, elongated aperture 220 is provided in the main bodyof the security flap so that the flap may function, for example, as amail slot through which mail may be inserted into a dwelling.Alternatively, instead of aperture 220 in the flap, a cut-away portionof similar size could be formed in the distal end 65 of the flap for thesame purpose. In the FIG. 47 embodiment, a plurality of circularapertures 222 are provided in the main body of the security flap for thepurpose of permitting ventilation and/or air circulation to and from thedwelling under door 6. The provision of the ventilation allowed by theFIGS. 46-47 embodiments permits the security flaps to close more easily.

FIG. 50 is a perspective view illustrating a particular spring-biasedsecurity seal system according to an embodiment of this invention. Asillustrated, the coil spring 230 is provided inside of elongated housing132 within hinge 70 of the security seal system. Spring 230 functions tobiased security flap upward into the non-secured position (e.g.,substantially parallel to the floor) when the security flap is not incontact with cam 90 or the like. Tension on spring 230 in the FIG. 50embodiment is provided by securing end 233 of spring 230 withinreceiving slot 234 of elongated member 235 which is affixed withinhousing 132. This is generally illustrated at 236. While end 233 of thespring is affixed within slot 234 in a non-rotatable manner, end 237 ofspring 230 is secured within slot 238 of elongated member 239. Spring230 is tensioned by rotating elongated member 239 with the springsecured in slot 238 thereof and, while tension is applied, affixingmember 239 relative to housing 132 by placing pin 240 through anaperture in the housing into member 239. As illustrated, a user mayrotate member 239 and spring end 237 by using screw driver 241 to turnscrew 242 which is affixed to member 239. The direction that 241 isturned determines whether the spring is tensioned up or down. In orderto permit member 239 to be affixed in different rotated positions withinhousing 132, a plurality of apertures 243 are provided in the exteriorof housing 132 with corresponding apertures being provided in member 239so that a pin 240 inserted into an aperture 243 and then into acorresponding aperture in member 239 secures and affixes the position ofmember 239 relative to housing 132 thereby maintaining tension on spring230. This allows spring 230 to bias security flap 64 upward into thenon-secured position substantially parallel to the bottom of door 6.

FIG. 51 illustrates a spring-biased security seal system according to anembodiment of this invention similar to that discussed above withrespect to the FIG. 50 embodiment. The difference between the FIG. 50embodiment and the FIG. 51 embodiment, is that the spring 250 in theFIG. 51 embodiment differs in design from spring 230 in the FIG. 50embodiment. As illustrated in FIG. 51, spring 250 has rectangular coilmembers while spring 230 has circular coil members. Otherwise, the twoembodiments function in a similar manner.

It is also to be pointed out that the spring embodiments of FIGS. 50-51may be used in conjunction with gravity actuated security flaps so as totension the flap downward thereby overcoming potential resistance.

As illustrated in FIGS. 52-53, the edge of security flaps 64, 134closest to the hinge door frame is angled downward at 291 where the flapcontacts actuator or cam 90. When door 6 closes, angle surface or edge291 of the security flap comes into contact with cam 90 as discussedabove thereby causing the flap to pivot downward into the securedposition. The angling of the edge of the flap as shown in FIGS. 52-53permits the flap to slide more easily at 291 along the actuating surfaceof cam 90.

While the invention has been described in connection with what ispresently considered to be the most practical and preferred embodiment,it is to be understood that the invention is not to be limited to thedisclosed embodiment, but on the contrary, is intended to cover variousmodifications and equivalent arrangements included within the spirit andscope of the appended claims.

1-20. (canceled)
 21. A multi-finger seal for sealing an edge of a door,the multi-finger seal comprising: a base; a plurality of flexiblesealing fingers extending from said base; and a plurality ofperforations defined in said base and/or in said fingers so that themulti-finger seal breaks into multiple pieces should removal of themulti-finger seal from the door frame be attempted, wherein theperforations are structured so as to cause the seal to break away andinto pieces at least at the application of 50% less force than thatwhich would otherwise be required to cause the seal to break away andinto pieces.